Adding Mac OS X Close Behavior to AIR 1.5 Application

By Mister | Published: June 3, 2009

Just a quick post because I have seen this done on other sites but it no longer is valid in AIR 1.5. Most Mac OS X applications minimize to system tray on closing the application using the “x” close button on the app. To achieve this in AIR 1.5 you will need to do the following on creationComplete event of the main application:

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// on application creation complete setup default Mac OS X behavior
private function init():void
{
if (NativeApplication.supportsMenu) { // we are on a Mac
//this.nativeWindow.addEventListener(InvokeEvent.INVOKE, handleAppInvoke);
NativeApplication.nativeApplication.addEventListener(InvokeEvent.INVOKE, handleAppInvoke);
this.nativeWindow.addEventListener(Event.CLOSING, handleAppHide);
NativeApplication.nativeApplication.addEventListener(Event.EXITING, handleAppExit);
NativeApplication.nativeApplication.autoExit = false;
} else { // we are on a Windows machine
this.nativeWindow.addEventListener(Event.CLOSING, handleAppClosing);
NativeApplication.nativeApplication.autoExit = true;
}
}

// active that application
private function handleAppInvoke(event:InvokeEvent):void
{
this.nativeWindow.activate();
}

// close all open windows
private function handleAppClosing(event:Event):void
{
event.preventDefault();
for (var i:int = NativeApplication.nativeApplication.openedWindows.length - 1; i >= 0; --i) {
NativeWindow(NativeApplication.nativeApplication.openedWindows[i]).close();
}
}

// hide the application instead of closing it
private function handleAppHide(event:Event):void
{
if( this.nativeWindow.visible ) { // if the window is visible the event behaviour is canceld and the window is hidden
event.preventDefault();
this.nativeWindow.visible = false;
}
}

// close all open windows, remove event listener for hiding application and close applicatin
private function handleAppExit(event:Event):void
{
this.nativeWindow.removeEventListener(Event.CLOSING, handleAppHide);

for (var i:int = NativeApplication.nativeApplication.openedWindows.length - 1; i >= 0; --i) {
NativeWindow(NativeApplication.nativeApplication.openedWindows[i]).close();
}
this.close();
}

- Mister